Bathtub liner



FIG. 1 is a perspective view of the bathtub liner showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right elevation view thereof;

FIG. 5 is a left elevation view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a perspective view with the bathtub liner in an uninstalled position thereof. 

CLAIM The ornamental design for a bathtub liner, as shown and described. 